DESCRIPTION
This circuit detects the state of the ignition switch, and sends it to the headlight leveling ECU assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (BATTERY - HEADLIGHT LEVELING ECU ASSEMBLY) |
(a) Disconnect the A40 headlight leveling ECU assembly connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
A40-1 (IG) - Body ground |
Ignition switch ON |
11 to 14 V |
A40-1 (IG) - Body ground |
Ignition switch off |
Below 1 V |
*1 |
Front view of wire harness connector (to Headlight Leveling ECU assembly) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
2. |
CHECK HARNESS AND CONNECTOR (HEADLIGHT LEVELING ECU ASSEMBLY - BODY GROUND) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Reassembly
REASSEMBLY
PROCEDURE
1. INSTALL NO. 2 STEERING RACK BOOT
(a) Apply lithium soap base glycol grease to the inside of the small
opening of a new No. 2 steering rack boot.
(b) Install the No. 2 ste ...
ECU Power Source Circuit
DESCRIPTION
This circuit provides power for main body ECU (driver side junction block assembly)
operation.
WIRING DIAGRAM
PROCEDURE
1.
CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY (MAIN BODY ECU (POWER SOURCE))
...
Ignition Key Cylinder Light
Components
COMPONENTS
ILLUSTRATION
Inspection
INSPECTION
PROCEDURE
1. INSPECT TRANSPONDER KEY AMPLIFIER
(a) Connect a positive (+) lead from battery to terminal 2 and a negative
(-) lead to terminal 6.
...